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Finding the Fourth Proportional to 480.89, 661.75 and 466.65

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Solution

The fourth proportional to 480.89, 661.75 and 466.65 is: 642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.89 : 661.75 = 466.65 : x
  2. Step 2: Convert to fraction form
    480.89/661.75 = 466.65/x
  3. Step 3: Cross multiply
    480.89x = 661.75 × 466.65
  4. Step 4: Simplify right side
    480.89x = 308,804.47
  5. Step 5: Solve for x
    x = 308,804.47/480.89
  6. Step 6: Final answer
    x = 642.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.